Key auth - Moderately critical - Access bypass - SA-CONTRIB-2026-138

published 2026-09-09 2 mo ago modified 2026-10-22 17 d ago also DRUPAL-CONTRIB-2026-138 , EUVD-2026-107861

cvss: 5.4; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 14%
public exploits: 0; none known

Use of Web Browser Cache Containing Sensitive Information vulnerability in Drupal Key auth allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects Key auth versions: from 0.0.0 to 2.2.4.

Patch / fix

fixed in 2

packagist drupal/key_auth 2.2.4
Drupal Key auth 2.2.4

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 17 d ago (2026-10-22)

Exploit prediction

0.23% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CNA	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
packagist	drupal/key_auth	<2.2.4	2.2.4

Affected products

Drupal Key auth

Classification

Weakness

CWE-525 Use of Web Browser Cache Containing Sensitive Information

References

drupal.org /sa-contrib-2026-138
web

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary